_uses necromancy_
In case anyone was still wondering:
RS-2us was not only able of doing ground attack stuff, IRL it was actually trained thing - to attack ground targets with the said missile. This is comming from experience of actual (Czechoslovak) air-force personel - a book, and posts on a mil-history page.
Funnily enough, the same has been done with MiG-19PM! Pilots would train A-A use over Astrakhan desert (RSSFR), north of Caspian sea - and then train at home, firing at ground targets...
From what I remember, it was this possibility of using the RS-2us against ground targets that led to using the guidance system for Kh-66. Which meant that you could train the use of Kh-66 using the RS-2us - and in turn use Kh-66 against aerial targets (which is possible in DCS, as I have seen - someone even took out an F-15 with the grom!), well - except for its lack of proximity fuse, which meant either direct hit or miss...